TWI732911B - A panel vibration type display device - Google Patents

Abstract

Provided are an actuator fixing device and a panel vibration type sound-generating display device including the same. A display device includes: a display panel configured to display an image, a cover bottom configured to cover the display panel, and a plurality of sound-generating actuators supported by the cover bottom, the sound-generating actuators being configured to vibrate the display panel to generate sound, at least two of the sound-generating actuators being adjacent to each other.

Description

Panel vibration type display device

The present invention relates to a display device, and more particularly, to a display device that generates sound by vibrating a display panel and a sound actuator fixing structure used accordingly.

With the development of various portable electronic devices such as mobile communication terminals and notebook computers, there are increasing expectations for flat panel display devices that can be applied to such portable electronic devices. Flat panel display devices include a liquid crystal display (LCD) device, an electroluminescence display device, a light emitting diode (LED) display device, and an organic light emitting diode (OLED) display device.

Among these display devices, a liquid crystal display (LCD) device includes an array substrate with a thin film transistor array, a top substrate including color filters and/or a black matrix, etc., and a liquid crystal material layer formed therebetween. The orientation state of the liquid crystal is controlled according to the electric field acting between the two electrodes in the pixel area, thereby adjusting the transmittance of light to display images.

Recently, organic light-emitting diode (OLED) display devices, which are the focus of display devices, use self-emission, that is, "self-luminous" organic light-emitting diodes (OLED) have fast response time, high luminous efficiency, high brightness, and The advantages of wide viewing angles.

At the same time, a combined device or finished product including such a display device as described above may include, for example, a television (TV), a computer monitor, or an advertising panel. Such a display device or combination device may include a sound output device, such as a speaker, for generating and outputting sound related to the displayed image.

Generally, a company that manufactures the display part of a device such as a liquid crystal display device or an organic light-emitting diode display device only manufactures a display panel or display device, while another company that manufactures a speaker assembles the speaker and the manufactured display part to complete the output image Combination device with sound. The opposite assembly can also be done, but it is still divided into two parts and is often implemented in different manufacturing facilities.

Fig. 1 is a plan view of a speaker included in a conventional display device.

As shown in FIG. 1, the conventional display device 1 or combination device includes a speaker 2 arranged at the rear or bottom of the display panel. In this structure, the sound generated by the speaker 2 does not go directly toward a viewer, where the viewer views the image from the front of the display device 1, but toward the rear, bottom, or edge of the display panel on which the image is being displayed. , Instead of traveling on the front of the display panel. Therefore, the directionality of the sound mismatch may disturb the audience's immersive experience. In addition, when the sound generated from the speaker 2 proceeds toward the rear, lower portion, or edge of the display panel, the sound quality may be degraded due to interference with the sound reflected by the wall, floor, or other surfaces behind or below the display panel.

In addition, the sound generated by the speaker included in the display device of the prior art does not face the viewer of the display device, and therefore may experience diffraction, which further degrades sound localization. In addition, in a combination device configured such as a television (TV), the speakers may occupy an undesirably large amount of space, which imposes restrictions on the design and spatial arrangement of the combination device. For example, in mobile devices, speakers occupy space thereby forcing a larger size of thickness and/or frame area.

On the other hand, a technology in which a display panel or a diaphragm attached to the display panel is vibrated by an actuator to output sound has recently been proposed. Such a sound output scheme may include a diaphragm for generating sound in addition to the display panel, and the scheme of fixing the sound emitting actuator to the support structure of the display device is complicated. Therefore, it is necessary to develop a structure for fixing an actuator for generating sound through a vibrating display panel or diaphragm to a display device.

Therefore, the present invention relates to an actuator fixing device and a panel vibration type sound emitting display device including the same, which basically eliminates one or more problems caused by the limitations and shortcomings of the conventional technology.

One aspect of the present invention is to provide a panel vibrating display device capable of generating sound through a display panel of the vibrating display device.

Another aspect of the present invention is to provide a display device including a panel vibration type sound device with improved sound emission performance and reduced thickness.

Another aspect of the present invention is to provide a sound actuator fixing device and including the The display device of the actuator fixing device, which can maintain the strength of the actuator support structure even during long-term operation.

Another aspect of the present invention is to provide a sounding actuator fixing device capable of increasing sound pressure while maintaining sound characteristics in the entire frequency band, and a display device including the same.

Other features and aspects of the present invention will be partially explained in the following description, and other features and aspects of the present invention can be partially understood by those of ordinary skill in the art through the following description of the present invention or can be obtained from Obtained from the practice of the present invention. Other features and aspects of the present invention can be realized and obtained through the structure specified in the specification and the scope of the patent application of the present invention combined with the part of the drawings.

In order to obtain these and other aspects of the present invention, the present invention will now be described in detail and in general terms. A display device of the present invention may include: a display panel for displaying images, a bottom cover covering the display panel, and a bottom cover covering the display panel. At least two of the supporting sound actuators are configured to vibrate the display panel to generate sound, and at least two of the sound actuators are adjacent to each other.

In addition, a device may include: a display panel for displaying images, a plurality of sound-emitting actuators that vibrate the display panel to generate sound, a bottom of a cover covering the display panel, and an actuator fixing device for attaching at least two A sounding actuator is fixed to the bottom of the cover.

In addition, a device may include a display panel for displaying images, a plurality of sound actuators that vibrate the display panel to generate sound, and a reinforcing rib configured to hold at least two sound actuators.

In addition, a device may include: a display panel that displays images, and a plurality of sound-emitting actuators that vibrate the display panel to generate sound. The sound-emitting actuators include at least a first sound-producing actuator and a second sound-producing actuator. The distance between the first sounding actuator and the second sounding actuator is smaller than the diameter of the first actuator or the diameter of the second actuator.

In addition, a device may include: a display panel that displays images, and a plurality of sound-emitting actuators that vibrate the display panel to generate sound, and at least two of the sound-emitting actuators are configured to receive an identical signal for vibrating the display panel. control signal.

By checking the following drawings and detailed description, other systems, methods, features and advantages will be or will become apparent to those skilled in the art. All these other systems, methods, features, and advantages are intended to be included in this specification, included within the scope of the present invention, and protected by the scope of the attached patent application. Any content in this section shall not be regarded as a limitation on the scope of patent application. Other aspects and advantages will be discussed below in conjunction with the embodiments of the present invention. It should be understood that the foregoing general description and the following detailed description of the present invention are both exemplary and illustrative, and are intended to provide further explanation of the claimed invention.

1: display device

2: speaker

100: display panel

200: first actuator

200': second actuator

210: bottom plate

210': top plate

220: Magnet

230: Center pole

240: Outer frame

250: spool

260: Coil

270: Elastic

280: Vibration transmission part

300: cover bottom

310: Support hole

320: fixing bolt

330: Self-locking nut

400: baffle part

410: Adhesive

420: Sealed part

500: Intermediate shell

600(A/G): Air gap space

1000: Actuator fixture

1110: The first receiving part

1120: The first support

1210: The second receiving part

1220: second support

1310: mounting hole

1320: mounting hole

1330: mounting hole

1340: mounting hole

1400: strengthen ribs

1410: first longitudinal rib

1420: second longitudinal rib

1430: Lateral ribs

1440: Diagonal ribs

D: size

d: distance

Fig. 1 is a plan view of a speaker included in a conventional display device.

2A and 2B are views of a display device including a panel vibration type sound device to which an embodiment of the present invention can be applied. Figure 2A is a plan view. Fig. 2B is a cross-sectional view taken along II' of Fig. 2A.

3 is a perspective view showing the structure of the actuator fixing device and the bottom of the cover as the supporting structure of the display device according to an embodiment of the present invention.

4A, 4B, and 4C are views of an actuator fixing device and an actuator combination according to an embodiment of the present invention. Fig. 4A is a perspective view along one direction. Figure 4B is a plan view. Figure 4C is a perspective view along a different direction.

Fig. 5 shows the distance (d) between two actuators in the actuator fixing device according to an embodiment of the present invention.

Fig. 6 is a cross-sectional view showing an example of the structure of a sounding actuator used in an embodiment of the present invention.

7A and 7B show a state in which a sound-emitting actuator that can be used in an embodiment of the present invention vibrates the display panel to generate sound.

FIG. 8 shows the structure of a baffle part provided between the display panel and the bottom of the cover as the supporting structure in the display device according to an embodiment of the present invention.

9A and 9B are diagrams for explaining sound output characteristics in the case of using a sound-emitting actuator fixing device according to an embodiment of the present invention. Fig. 9A shows an actuator mounting configuration compared with the embodiment of the present invention. FIG. 9B is a diagram for comparing the installation configuration of FIG. 9A with the sound output characteristics in an embodiment of the present invention.

Fig. 10A shows an actuator fixing device having ribs according to an embodiment of the present invention.

10B and 10C are graphs showing the effect over time in the case of using a rib of the actuator fixing device according to an embodiment of the present invention. And FIG. 11 is a graph showing the sound output characteristics of the distance (d) between two actuators in the actuator fixing device according to an embodiment of the present invention.

Throughout the drawings and detailed description, unless otherwise described, the same reference numerals should be understood to refer to the same elements, features, and structures. For clarity, description, and convenience, the relative sizes and depictions of these elements may be exaggerated.

Reference will now be made in detail to some embodiments of the present invention, some examples of which are shown in the accompanying drawings. In the following description, when it is determined that detailed descriptions of known functions or configurations related to this document unnecessarily obscure the concept of the present invention, these detailed descriptions will be omitted. The described processing steps and/or operations are an example; however, except for the steps and/or operations that must occur in a specific order, the order of the steps and/or operations is not limited to the steps and/or operations described herein, and It can be changed as known in the art. The same reference numerals always refer to the same elements. The names of the various components used in the following description are chosen only for the convenience of writing, and may therefore be different from those used in the actual product.

In the description of the embodiments, when a structure is described as being positioned "on or above" or "under or below" another structure, this description should be interpreted as including the case where the structures are in contact with each other and a third structure is provided therebetween. .

The term "display device" used in this manual not only refers to display devices, such as a display panel (or display module), a liquid crystal module (LCM), and a display panel for driving The drive unit is an organic light emitting diode (OLED) display device, and also refers to a combined electronic device or a combined device, such as a notebook computer, a TV, a computer monitor, a device display (such as a car display Or other types of vehicle display devices), or refers to mobile electronic devices, such as finished smart phones or tablet computers that can include liquid crystal modules (LCM), organic light emitting diode (OLED) modules, and the like. That is, in this specification, the term "display device" is used as a display device such as a liquid crystal module (LCM) and an organic light-emitting diode (OLED) module, and as an application product or an application product having a display device implemented therein. The final consumer's device.

However, in some cases, a liquid crystal module (LCM) or an organic light emitting diode (OLED) module with a display panel and its driving unit is a "display device" and a "combined device" or "combined device" Not the same. For example, the meaning of "display device" can include a liquid crystal display panel (LCD) or an organic light emitting diode (OLED) display panel and a source printed circuit board (PCB) as its driving controller, and the combined device Or the combination device may further include a setting printed circuit board (PCB) as a setting controller, and the setting printed circuit board (PCB) is electrically connected to the source printed circuit board (PCB) to control the entire setting device or the entire setting device.

The display panel used in an embodiment of the present invention may include any type of display panel, such as a liquid crystal display (LCD) panel, an organic light-emitting diode (OLED) display panel, etc., and is not limited to sound-emitting actuators. Vibration generated by direct vibration is a technology that can generate sound waves or a specific display panel for sound output.

When the display panel is a liquid crystal display panel, the display panel may include: pixels defined by a plurality of gate lines, a plurality of data lines and a crossing area thereof, and an array substrate with thin film transistors, wherein the thin film transistors Corresponding to the switching element for adjusting the light transmittance of each pixel, a top substrate with color filters and/or black matrix, etc., and a liquid crystal material layer formed between the array substrate and the top substrate.

In addition, when the display panel is an organic light-emitting diode (OLED) display panel, the display panel may include: pixels defined in a plurality of gate lines, a plurality of data lines and their crossing regions, with thin film transistors Of an array substrate, in which thin film transistors selectively provide voltage to each Pixel switching elements, an organic light emitting diode (OLED) layer located on the array substrate, and an encapsulation layer arranged on the array substrate to cover the organic light emitting diode layer, etc. The packaging substrate can protect the thin film transistor, the organic light emitting diode layer, etc. from external impact, and can prevent moisture and/or oxygen from penetrating into the organic light emitting diode layer. The layer on the array substrate may include an inorganic light-emitting layer that can enhance the quality of the output image, such as a quantum dot emitting layer(s), a nano-sized material layer, and the like. The shape, size, type, etc. of the display panel used in the display device according to the embodiment of the present invention are not limited.

For any display type, the display panel may also include a back plate, such as a metal plate attached to it. Other structures can also be included. The display panel with the actuators in the manual can be implemented in the user interface module of the vehicle, for example, in the central control panel area of the vehicle. For example, such a display panel may be arranged between two front passengers, so that the sound caused by the vibration of the display panel is transmitted to the interior of the vehicle. Therefore, compared to having speakers only on the inside of the vehicle, the audio experience in the vehicle can be improved.

In the case of a liquid crystal display panel, since multiple layers are stacked in the indirect light source type backlight, it is necessary to provide an independent light source. On the other hand, since an organic light-emitting element of an organic light-emitting diode (OLED) display panel corresponds to a self-luminous element, a separate light source is not required, and because, for example, a polarizing layer (POL), a glass layer, And several layers of an encapsulation layer are laminated into one panel, so even if the organic light emitting element is directly vibrated by the acoustic actuator, it hardly affects the light emitting characteristic layer of the organic light emitting layer, so that image distortion does not occur. However, it is not necessary to use a self-luminous display panel, such as an organic light-emitting diode display panel or an inorganic light-emitting display panel. Meanwhile, since the display panel used in the display device according to an embodiment of the present invention has a general structure, a detailed description of the display panel will be omitted.

2A and 2B are views of a display device including a panel vibration type sound device to which an embodiment of the present invention can be applied. Figure 2A is a plan view. Fig. 2B is a cross-sectional view taken along II' of Fig. 2A.

As shown in FIGS. 2A and 2B, a display device according to an embodiment of the present invention may include: a display panel 100 for displaying images, and a support structure, which may be the back surface support structure of the display device, for example, a cover bottom 300 , Two sounding actuators 200, 200', and one surface of the display panel Contacting and vibrating the display panel to generate sound, the sounding actuators are adjacent to each other, and the actuator fixing device 1000 is used to fix two adjacent sounding actuators. Hereinafter, the sounding actuators 200, 200' may be referred to as "actuators".

As will be described in more detail below, for example, in FIG. 6, the sounding actuator 200 may include a magnet 220, a base plate 210 for supporting the magnet 220, and a center pole 230 protruding from a central area of the base plate 210. , And a bobbin 250 surrounding the central pole 230 and having a coil 260, wherein a current for generating sound is applied to the bobbin 250. The distal end of the spool 250 may be in contact with one surface of the display panel 100. However, such a detailed structure is only an example, because various other equivalent components can be used to realize the actuator used in the embodiment of the present invention. The distal end of the spool 250 can be expressed as a vibration transmitting member 280.

The actuator fixing device 1000 is a fixing structure for supporting two adjacent actuators and for fixing the actuators to the rear surface support structure of the display device to increase the intensity of the generated sound, that is, the sound pressure. The detailed configuration of the actuator fixing device will be described in more detail with reference to FIG. 3 and the following drawings.

In addition, as shown in FIG. 2B, the display device may include a support structure for supporting at least one of the rear surface or the side surface of the display panel 100, and the sounding actuator fixing device 1000 may be fixed to the support structure of the display device.

This supporting structure may include a cover bottom 300 disposed on the rear surface of the display panel 100, and may also include an intermediate housing 500 coupled to the cover bottom 300 while surrounding the side surface of the display panel 100. The middle housing 500 may receive and support one side edge of the display panel 100. The supporting structure may be a cover bottom, such as the cover bottom 300, and may include other structures. The supporting structure, which may be the bottom of the cover, may include additional components, may include multiple components, and does not need to cover the entire rear of the display panel. The support structure may include other elements that directly or indirectly support the actuator (much like an actual product).

The cover bottom 300 constituting the support structure may be a plate-shaped member formed of metal or plastic extending on the entire rear surface of the display device. At the same time, the cover bottom 300 in this specification is not limited to the terms "cover" or "bottom", but can be called a plate bottom, a back cover, a base, a metal frame, a metal base, a chassis, a m- Chassis and so on. The cover bottom 300 should be understood as including the display device All types of frames or plate-like structures of the rear base are used as the concept of supporting members to support the display panel.

In addition, the display device according to an embodiment of the present invention may further include a baffle part 400 for forming a space or an air gap space 600 (A/G), wherein the air gap space 600 (A/G) is used for A space for transmitting the generated sound waves and is provided between the display panel 100 and the cover bottom 300 or the middle housing 500, such as a supporting structure.

That is, by tightly bonding the display panel 100 to the cover bottom 300 at the edge of the air gap space 600 (A/G), the air gap space 600 (A/G) is formed between the display panel 100 and the cover bottom 300, and The sound wave generated by the actuator that vibrates the display panel 100 may be held or propagated through the air gap space 600 (A/G).

That is, the baffle part 400 may be on the edge of the cover bottom 300 or the middle case 500, and refers to a member that defines a space or an air gap, and is used to seal the bottom surface of the display panel 100 and the support structure of the display device (for example, A gap between the cover bottom 300 or the middle housing 500) to generate sound according to the vibration of the display panel.

In the display panel vibrating display device of the embodiment of the present invention, the intensity of the sound generated according to the output or size of the actuator for vibrating the display panel 100, that is, the sound pressure is determined. On the other hand, in order to increase the output of the actuator, the size of the actuator should be increased. In this case, the thickness of the entire display device may be increased.

Therefore, a plurality of actuators may be used in which the same control is provided to generate sound having a sound intensity (sound pressure) higher than a certain level while maintaining the thinness of the display device. On the other hand, when a plurality of actuators that operate in the same manner are provided separately from each other, the sound output characteristics may be degraded due to interference or resonance of sound waves generated in the actuators. Therefore, when the actuators for increasing the sound pressure are provided, it may be necessary to arrange the actuators adjacent to each other to maintain the sound characteristics.

However, even if two or more actuators are arranged next to each other, when the two actuators are separated, a so-called "dip" phenomenon that generates strong sound pressure at a specific frequency may occur. This is Due to the interference and delay between the actuators. Therefore, an embodiment of the present invention provides an actuator fixing device 1000, which can integrally support at least two adjacent ones of each other. And fix the actuators to the support structure of the display device (for example, the bottom of the cover).

From this point of view, the structure of a display device according to an embodiment of the present invention will be described. The panel vibration type sound emitting display device according to an embodiment of the present invention may include: a display panel 100 for displaying images, a cover bottom 300 as a rear surface support structure, for covering and supporting at least the display panel of the display panel The rear surface, at least two or more sounding actuators 200 and 200', are inserted into the support hole 310 provided in the bottom 300 of the cover, and have a distal end contacting one surface of the display panel 100 to make the display panel 100 vibration generates sound, and an actuator fixing device 1000 for integrally supporting at least two or more sound-producing actuators 200 and 200' adjacent to each other and actuating the at least two or more sound-producing actuators The devices 200 and 200' are fixed to the bottom 300 of the cover.

The configuration according to an embodiment of the present invention will be described in more detail with reference to FIGS. 3 and 8. Hereinafter, for convenience, the example of the audible actuator described here includes two actuators called a "first actuator 200" and a "second actuator 200'", but the present invention The embodiments are not limited to this.

3 is a perspective view showing the structure of the actuator fixing device and the bottom of the cover as the supporting structure of the display device according to an embodiment of the present invention. 4A, 4B, and 4C are views of an actuator fixing device and an actuator combination according to an embodiment of the present invention. Fig. 4A is a perspective view along one direction. Figure 4B is a plan view. Figure 4C is a perspective view along a different direction.

As shown in FIG. 3, the actuator fixing device 1000 used in an embodiment of the present invention is an integral fixing structure for fixing and supporting the first actuator 200 and the second actuator 200' that are adjacent to each other. Such an actuator fixing device 1000 may be a mold structure formed of a material such as plastic through a molding method, but the embodiment is not limited thereto.

In more detail, the actuator fixing device 1000 according to an embodiment of the present invention may include: a first supporting portion 1120 for supporting the first actuator 200, and a first supporting portion 1120 for supporting the second actuator 200' Two supporting parts 1220, a reinforcing rib 1400 arranged adjacent to the first supporting part 1120 and the second supporting part 1220, and a plurality of mounting holes 1310 to 1340 for fixing the actuator fixing device 1000 to the cover bottom 300 .

The first supporting portion 1120 may be a side surface and a rear surface supporting the first actuator 200 Part of a cylindrical structure. A first receiving part 1110 that can receive a part of the rear part of the first actuator 200 may be formed inside the first supporting part 1120.

Similarly, the second supporting portion 1220 may be a cylindrical structure supporting a part of the side surface and the rear surface of the second actuator 200'. A second receiving part 1210 that can receive a part of the rear part of the second actuator 200 ′ can be formed inside the second supporting part 1220.

The first support portion 1120 and the second support portion 1220 may be composed of two or four arcuate protrusions, for example. The distal end of the protruding portion may be bent inward to support a part of the rear surface of each actuator 200 and 200 ′, thereby preventing the actuator from deviating toward the outside of the actuator fixing device 1000.

A plurality of reinforcing ribs may be formed near the first support portion and the second support portion to prevent deformation of the actuator fixing device even during long-term use, while maintaining the rigidity of the actuator fixing device. In more detail, the reinforcing rib 1400 may include a first longitudinal rib 1410 extending longitudinally on the outer peripheries of the first support portion 1120 and the second support portion 1220 for longitudinally connecting the first support portion 1120 and the second support A second longitudinal rib 1420 of the portion 1220 and a transverse rib 1430 extending perpendicular to the second longitudinal rib 1420. In the present invention, for ease of description, the long-side direction in which the two actuators are provided is called the "longitudinal" direction, and a short-side direction perpendicular to the longitudinal direction is called the "transverse" direction.

The first longitudinal rib 1410 may extend outward from the longitudinal direction of the first support portion 1120 and the second support portion 1220 to form a longitudinal outer structure of the actuator fixing device 1000. The central area of the first longitudinal rib 1410, that is, the central area between the first support portion 1120 and the second support portion 1220, may be higher in height than the two side areas of the first longitudinal rib 1410, or the first longitudinal rib The portion 1410 may be thicker than the first support portion 1120 and the second support portion 1220. Therefore, even if the two actuators vibrate with high output power for a long time, the deformation of the actuator fixing device can be prevented, and the change in the relative position between the two actuators 200 and 200' and the display panel 100 is reduced.

On the other hand, at least one second longitudinal rib 1420 integrally connected with the first support part 1120 and the second support part 1220 may be provided inside the first longitudinal rib 1410. In FIGS. 3 and 4, two second longitudinal ribs 1420 are shown, but the present invention is not limited to this. For example, one, three, or more second longitudinal ribs 1420 may be formed. In addition, it can be integrally connected with the longitudinal ribs At least one transverse rib 1430 connected and extendable in the transverse direction may be formed between the two second longitudinal ribs 1420 or between the two first longitudinal ribs 1410.

3 and 4 show examples including one transverse rib 1430. FIG. 3 shows an example of a structure in which a transverse rib 1430 extends a short distance between two second longitudinal ribs 1420. 4A to 4C show examples of structures in which the transverse rib 1430 extends a long distance between two second longitudinal ribs 1420.

Moreover, as shown in the figure, for example, in FIGS. 4B and 10A, one or more diagonal ribs 1440 extending diagonally may be further formed between the first support portion or the second support portion and the first longitudinal rib 1410 . Therefore, in the actuator fixing device 1000 according to an embodiment of the present invention, even if the two actuators vibrate strongly for a long time, a structure including a plurality of ribs extending in the longitudinal, lateral, and diagonal directions can be formed. Reinforce the ribs to strongly support the two actuators. As a result, deformation of the actuator fixing device can be prevented, and changes in the relative positions between the two actuators and the display panel can be reduced. Therefore, changes in sound characteristics due to long-term operation can be reduced, and the experimental results will be described in more detail with reference to FIG. 10.

As described above, the reinforcing rib 1400 formed in the actuator fixing device according to the embodiment of the present invention should include one or more longitudinal ribs arranged in the longitudinal direction connecting the two actuators. In addition, if the reinforcing rib 1400 is asymmetric, the difference in the amount of deflection of the actuator fixing device may occur at a high temperature or a low temperature, so that the sound characteristics may be degraded. Therefore, the reinforcing rib 1400 according to an embodiment of the present invention may preferably be symmetrical in all directions.

As described above, when a thin diaphragm (such as paper, polypropylene (PP), etc.) is used in a general-purpose speaker, the sound pressure will be sufficient. However, when the display panel is used as a diaphragm as described in an embodiment of the present invention, the sound pressure may be reduced due to the weight and thickness of the display panel. Therefore, it may be difficult to commercialize the display device.

Therefore, in the display panel direct vibration type display device, a structure in which a plurality of actuators controlled in the same manner are connected in series to increase the sound pressure is proposed. However, when these actuators are simply arranged in series, it is difficult to uniformly maintain the contact characteristics between the actuators and the display panel, and due to The delay phenomenon and the interference between the actuators degrade the sound quality.

Therefore, an embodiment of the present invention can provide an actuator fixing device, which is a device for fixing and supporting two or more actuators adjacent to each other, and fixing the actuators to the bottom of the cover. It may be a rear support structure of the display device to solve the above-mentioned problems. In this case, there may be a structure in which the first support portion 1120 and the second support portion 1220 only support some parts of the rear surface of the first actuator 200 and the second actuator 200', and the first actuation The central portion of the rear surface of the actuator 200 and the second actuator 200 ′ may be exposed to the outside of the actuator fixing device 1000. That is, as shown in FIG. 4A, the distal ends of the protruding portions of the first support portion 1120 and the second support portion 1220 may be slightly bent inward to support only a portion of the rear surface of each actuator, so that the actuator 200 The central part of the surface after 200' can be exposed to the outside.

As shown in FIG. 2B, due to the recent trend of display devices to be as thin as possible, the gap of the air gap space 600 between the display panel 100 and the cover bottom 300 is very small, for example, about 0.9 millimeters (mm) or less. On the other hand, in the structure in which the display panel of the present invention vibrates to generate sound waves, the compression and relaxation characteristics of the air in the air gap space can affect the vertical vibration of the actuator, and when the air gap space is small, such an influence Become bigger. That is to say, due to the narrow air gap space, the compression and relaxation characteristics of air restrict the vertical vibration movement of the actuator, so that air damping may occur, in which the operating performance of the actuator is degraded.

Therefore, in an embodiment of the present invention, the first support portion 1120 and the second support portion 1220 may only support some parts of the rear surface of the first actuator 200 and the second actuator 200', respectively, so as to have a so-called An "open" structure in which the rear central portions of the first actuator 200 and the second actuator 200' are exposed to the outside of the actuator fixing device. Therefore, the effect of suppressing the above-mentioned air damping phenomenon can be provided by increasing the amount of insufficient air in the air gap space.

In addition, since the distance between the two actuators in the actuator fixing device 1000 according to an embodiment of the present invention affects the characteristics of the generated sound, the distance between the two actuators or the first support portion The distance (d) from the second support part should be optimized. As shown in FIG. 5, in order to form a reinforcing rib, the distance (d) defined as the shortest distance between the first support portion 1120 and the second support portion 1220 should be When greater than a minimum distance, and preferably less than a maximum distance value, that is, the size of the first actuator 200 and/or the second actuator 200'.

In more detail, the smaller the distance (d) between the first support portion 1120 and the second support portion 1220, the better the sound quality characteristics. However, in order to ensure that the minimum thickness of the reinforcing ribs works, the distance (d) between the first support portion 1120 and the second support portion 1220 should be greater than the minimum distance, for example, about 7 millimeters (mm) in the experimental example.

In addition, according to experimental results, it is confirmed that when the distance (d) between the first support portion 1120 and the second support portion 1220 is greater than the minimum distance value, the sound quality characteristics are somewhat changed. However, until the separation distance (d) between the first support portion 1120 and the second support portion 1220 is less than or equal to the size D of the actuator, the change in the sound quality characteristics is not significant, and when the first support portion 1120 and the second support portion 1120 When the separation distance (d) between the supporting parts 1220 is greater than the size D of the actuator 200 or 200', the sound characteristics are drastically reduced.

Therefore, in an embodiment of the present invention, the distance (d) between the first support portion 1120 and the second support portion 1220 of the actuator fixing device 1000 is smaller than the size D of the actuator, so that the degradation of sound quality is reduced. . The result of the experiment will be described in more detail with reference to FIG. 11 below.

Moreover, the actuator fixing device 1000 according to an embodiment of the present invention may include a plurality of mounting holes for fixing and coupling the actuator to the bottom of the cover. In the examples of FIGS. 3 and 4, a first mounting hole 1310 to a fourth mounting hole 1340 are respectively formed at the four corners of the actuator fixing device 1000.

In addition, as shown in FIG. 3, the actuator fixing device 1000 may further include a self-locking nut 330, such as a PEM® nut, fixed to the bottom 300 of the cover. The actuator fixing device 1000 may be fixed to the self-locking nut 330, for example, a PEM® nut is inserted into the mounting holes 1310 to 1340 through the fixing bolt 320. In addition, one side of the self-locking nut 330 can be forcibly inserted into a self-locking nut fixing hole formed in the bottom 300 of the cover, for example. Then, the distal end of the self-locking nut 330 can be coated, so that the self-locking nut 330 can be fixed to the cap bottom 300. At the same time, because a screw through hole can be formed in the inner surface of the self-locking nut 330, the actuator fixing device 1000 can align the mounting hole of the actuator fixing device with the screw through hole of the self-locking nut 330 And then the fixing bolt 320 is fastened to be fixed to the cover bottom 300.

Using this self-locking nut 330 has the effect of preventing the strong vibration of the actuator from being transmitted to the bottom of the cover to a certain extent. That is, when the actuator fixing device 1000 is directly coupled to the cover bottom 300 without the self-locking nut 330, the strong vibration generated in the operation of the actuator can be transmitted to the cover bottom 300 for a long time, and as a result, it is thinner. The lid bottom 300 may be bent or deformed. On the other hand, as in the embodiment of the present invention, when the self-locking nut 330 is used, the vibration generated in the actuator can be absorbed through the self-locking nut. As a result, the vibration transmitted to the bottom of the cover can be reduced.

In addition, when the self-locking nut 330 is used, there is an advantage that when the fixing bolt is directly screwed to the bottom of the cover, the problem of insufficient fixing force due to the thinner bottom of the cover is solved. That is, when there is no self-locking nut 330, the fixing bolt 320 passing through the screw hole formed in the mounting hole of the actuator fixing device 1000 should be directly screwed to the screw hole formed in the bottom 300 of the cover. In this case, when the thickness of the cover bottom 300 is large, there is no concern in coupling, but when the thickness of the cover bottom 300 is small, there is a problem that the coupling force may be insufficient. Therefore, if, for example, the self-locking nut 330 is previously fixed to the cover bottom 300 in the press-fit/locking manner described above, and then the actuator fixing device 1000 is coupled to the self-locking nut 330, even when the thickness of the cover bottom 300 is adjusted It can also ensure sufficient connection force when it is small.

Hereinafter, the detailed structure of the actuator that can be used in an embodiment of the present invention and the principle of sound generation by the vibration of the actuator will be described in detail.

Fig. 6 is a cross-sectional view showing an example of the structure of a sounding actuator used in an embodiment of the present invention. FIG. 7 shows a state in which a sound-generating actuator that can be used in an embodiment of the present invention vibrates the display panel to generate sound.

The first actuator 200 and the second actuator 200' used in an embodiment of the present invention may have the same structure. Hereinafter, the first actuator 200 as one of the first and second actuators 200 and 200' will be described as an example.

The acoustic actuator 200 used in an embodiment of the present invention may include: a magnet 220 as a permanent magnet, a bottom plate 210 and a top plate 210' for supporting the magnet 220, and a center pole protruding in the central area of the bottom plate 210 230, a spool 250 around the center pole 230, and a winding spool 250 A coil 260 for generating sound current is applied to it.

Embodiments of the vocal actuator may include a first type structure in which the magnet is arranged on the outer side of the coil, and a second type structure in which the magnet is arranged on the inner side of the coil. FIG. 6 shows an example of the first type structure in which the magnet is provided on the outer side of the coil.

The acoustic actuator according to the first type of structure can be referred to as an "external" magnet type actuator. A bottom plate 210 can receive and be fixed to the first supporting portion 1120 of the actuator fixing device 1000. The magnet 220, which may be a ring-shaped permanent magnet, may be located on the outer circumference of the bottom plate 210. A top plate 210 ′ can be located on the top of the magnet 220. An outer frame 240 protruding from the top plate 210' may be on the outer periphery of the top plate 210'.

The center pole 230 may protrude from the center area of the bottom plate 210. The bobbin 250 surrounding the center pole 230 may be on the center area of the bottom plate 210. The coil 260 may be wound around the bottom of the spool 250. Electric current for generating sound may be applied to the coil 260. An elastic member 270 may be provided between a part of the top of the bobbin 250 and the outer frame 240.

As shown in the example of FIG. 6, the bottom plate 210 may have a circular shape, the magnet 220 may form a ring shape on the bottom plate 210, and the top plate 210 ′ may be located on the magnet 220. The plates 210 and 210' may be formed of a magnetic material, such as iron (Fe). The plates 210, 210' are not limited by the term "plate", but can be expressed by other terms understood by those of ordinary skill in the art, such as "yoke". The center pole 230 and the bottom plate 210 may be integrally formed.

The spool 250 may be an annular structure formed of, for example, paper or aluminum sheet. The coil 260 may be wound on a certain part of the bottom area of the bobbin 250. The bobbin 250 and the coil 260 may be combined to be called a "voice coil".

When current is applied to the coil 260, a magnetic field is formed around the coil 260. Due to the presence of an external magnetic field formed by the magnet 220, for example, according to Fleming's right-hand rule, the entire bobbin 250 can be moved to the upper part under the guidance of the center pole 230. On the other hand, since the distal end of the spool 250 may be in contact with the rear surface of the display panel 100, the display panel 100 may vibrate according to the current active and non-active states, and sound waves may be generated by vibration. A sintered magnet, such as a barium ferrite magnet, can be used as the magnet 220. The material can be iron oxide (Fe ₂ O ₃ ) and barium carbonate (BaCO ₃ ). An alloy cast magnet such as strontium ferrite magnet with improved magnetic force component, aluminum (Al), nickel (Ni), and cobalt (Co), can be used. The present invention is not limited to these embodiments.

On the other hand, the elastic member 270 may be provided between a part of the top of the bobbin 250 and the outer frame 240. The elastic member 270 may have a corrugated structure, and can adjust the vertical vibration of the spool 250 while shrinking and relaxing according to the vertical movement of the spool 250. That is, since the elastic member 270 may be connected to the bobbin 250 and the outer frame 240, the vertical vibration of the bobbin 250 may be restricted by the restoring force of the elastic member 270. For example, when the bobbin 250 vibrates at a specific height or higher or vibrates at a specific height or lower, the bobbin 250 can be restored to its original position through the restoring force of the elastic member 270. Such elastic member 270 can be expressed in other terms. For example, a "edge".

In addition, a vibration transmission member 280 may be provided at the distal end of the bobbin 250, and the vibration transmission member 280 is used to combine the bobbin 250 with the display panel 100 and transmit the vibration of the bobbin 250 to the display panel 100. The vibration transmitting member 280 may be an annular plate-shaped member, and the adhesive surface may be formed on both sides thereof. One surface of the vibration transmitting member 280 may be adhered to the distal end of the bobbin 250, and the other surface may adhere the vibration transmitting member 280 to the display panel 100.

The actuator used in an embodiment of the present invention is not limited to the external magnet type actuator of the example shown in FIG. 6. For example, a miniature or internal magnet type actuator in which the magnet is arranged inside the coil can be used. In the actuator according to the internal magnet type, the magnet is provided in the center area of the bottom plate, and a center pole is formed to protrude above the magnet. A top plate protrudes from the outer circumference of the bottom plate, and an outer frame is provided outside the top plate. A spool is provided to surround the periphery of the magnet and the center pole, and a coil is wound around the outer periphery of the spool.

In addition, the sound actuator used in the display device according to an embodiment of the present invention is not limited to the form shown in FIG. 6. Another type of actuator that can vertically vibrate the display panel to generate sound according to the application of electric current may be used.

7A and 7B show a state in which a sound-emitting actuator that can be used in an embodiment of the present invention vibrates the display panel to generate sound.

Fig. 7A shows the state in which current is applied. The center pole connected to the bottom surface of the magnet 220 230 can be used as an N pole, and the top plate 210 ′ connected to the top surface of the magnet 220 can be used as an S pole, so that an external magnetic field is formed between the coils 260.

In the illustrated state of FIG. 7A, when a current for generating sound is applied to the coil 260, an applied magnetic field is generated around the coil 260, and due to the applied magnetic field and an external magnetic field, a magnetic field for moving the spool 250 upward is generated.的力。 The force. Therefore, as shown in the example of FIG. 7A, the spool 250 can move upward, and the display panel 100 in contact with the distal end of the spool 250 can vibrate upward (see the arrow direction of FIG. 7A). When the current action is stopped or the current in the opposite direction is applied in this state, a force for moving the spool 250 downward is generated according to the similar principle shown in FIG. 7B. Therefore, the display panel 100 vibrates downward (refer to the arrow direction of FIG. 7B). Therefore, the display panel 100 may vibrate up and down according to the direction and size currently applied to the coil 260, and may generate sound waves from the vibration.

FIG. 8 shows the structure of a baffle part provided between the display panel and the bottom of the cover as the supporting structure in the display device according to an embodiment of the present invention.

In the panel vibration type sound device according to an embodiment of the present invention, a space or an air gap space 600 should be ensured between the display panel 100 and the supporting structure (for example, the cover bottom 300, etc.) to act as a panel to be actuated by sound The space where the device 200 vibrates. In addition, one side of the display panel should be connected to the support structure of the display panel so that sound waves can be generated when the display panel vibrates. In some embodiments, the generated sound should not leak to the outside through the side surface of the display device. To this end, in the display device according to an embodiment of the present invention, a constant baffle part 400 may be formed between the bottom surface of the display panel 100 and the cover bottom 300 as a supporting structure.

In more detail, a constant compartment or constant area (ie, a space or an air gap space) surrounding the sound actuator 200' may be defined, and the baffle part 400 may be disposed on the display panel 100 at the edge of this compartment or area. Between the bottom surface of the middle cabinet 500 or the top surface of the cover bottom 300. The baffle member 400 may include an adhesive 410, such as a double-sided tape, which is adhered between the bottom surface of the display panel 100 and the top surface of the support structure of the display device. A sealing part 420 may be further provided on the outer circumference of the adhesive 410. In this case, this compartment or area forming the baffle part 400 may be the entire display panel area defined by the four sides of the outer periphery of the display panel 100, but the embodiment is not limited thereto.

As shown in FIG. 8, the support structure of the display device can include an intermediate housing 500 in addition to the cover bottom 300 covering the entire rear surface of the display panel 100, and the intermediate housing 500 is coupled to the cover bottom 300 and securely A part of the display panel 100 is provided. The middle housing 500 may be a frame-shaped member formed along the outer circumference of the display panel 100. The middle housing 500 may have a substantially T-shaped cross-sectional shape by including a horizontal support portion and a vertical support portion, wherein a part of the display panel is safely disposed on the horizontal support portion, and the vertical support portion extends from the horizontal support portion along two sides of the display panel. Bend in four directions to cover the side surface of the cover bottom 300 and the side surface of the display panel 100. The middle case 500 may configure the side exterior of the display device or the setting device, but may be optional in some cases, or may be integrally formed with the cover bottom 300.

According to the embodiment of FIG. 8, the adhesive 410 constituting the baffle part 400 may be, for example, a double-sided tape provided between the top surface of the horizontal support part of the middle case 500 and the display panel 100. The adhesive 410 may serve to adhere and fix the bottom surface of the display panel 100 to the middle housing 500.

Moreover, the sealing portion 420 constituting the baffle portion 400 may also be disposed on the outer circumference of the adhesive 410, and may have an uncompressed thickness or height larger than the uncompressed thickness or height of the adhesive 410. The sealing portion 420 may be formed of a material having high elasticity (for example, rubber), and may have an uncompressed thickness larger than that of the adhesive 410.

That is, as shown in the example of FIG. 8, the adhesive 410 which is a double-sided adhesive tape having a certain uncompressed thickness may be adhered and disposed inside the top surface of the horizontal support part of the middle case 500. The sealing portion 420 of an elastic material having an uncompressed thickness larger than the specific uncompressed thickness of the adhesive 410 may be provided on the outer circumference of the adhesive 410.

In this state, when the display panel 100 is attached to the other bonding surface of the adhesive 410, the sealing portion 420 having a larger uncompressed thickness may be pressed to a certain extent, thereby aligning the display panel 100 with the middle housing 500 Combine. Therefore, the sealing performance of the air gap area around the sounding actuator can be further improved.

As a result, the display panel 100 and the cover bottom 300 can form an air gap space or space 600 as large as the specific uncompressed thickness of the adhesive 410 and the horizontal support portion of the middle housing 500 through. Combined with each other, as shown in the example of FIG. 8, it is possible to ensure a vibration space in which the display panel 100 can generate sound, and to prevent sound waves generated inside from flowing out to the outside along the side surface of the display device.

For example, the baffle part 400 disposed at the edge of the air gap space may have a double structure of the adhesive 410 and the sealing part 420. The sealing portion may have a larger uncompressed thickness, thereby further improving the sealing performance of the air gap space to further prevent the leakage of sound.

It should be understood that in the embodiment, the intermediate housing 500 may be replaced by other structures such as a guide plate, a plastic chassis, a pair of chassis, a supporting body, a main support, and a mold frame, and may include connection Any type of structure that reaches the bottom of the cover and is used to support the display panel and the baffle part, for example, includes a square frame-like structure with a cross-sectional shape of a plurality of curved parts.

Meanwhile, as described above, the middle housing 500 may be used to be supported between the bottom of the cover and the display panel. However, such an intermediate housing 500 is not a necessary structure, that is, it may be optional. When the middle case is not used, the above-mentioned baffle member may be disposed between the top surface of the cover bottom 300 and the bottom surface of the display panel.

9A and 9B are diagrams for explaining sound output characteristics in the case of using a sound-emitting actuator fixing device according to an embodiment of the present invention. Fig. 9A shows an actuator mounting configuration compared with the embodiment of the present invention. FIG. 9B is a diagram for comparing the installation configuration of FIG. 9A with the sound output characteristics in an embodiment of the present invention.

As described above, in a display device that generates sound by directly vibrating a display panel, a structure in which two or more sound-emitting actuators having the same characteristics are arranged adjacent to each other to increase the sound pressure may be adopted.

FIG. 9A is a structure in which two actuators 200, 200' are simply arranged adjacent to each other without the actuator fixing device (for example, the actuator fixing device 1000) according to an embodiment of the present invention. The dotted line in FIG. 9B represents a situation where two actuators are adjacent to each other and fixed separately without a separate actuator fixing device, and the tipping phenomenon occurs in which a significant increase in sound pressure in the 800 to 900 Hertz (Hz) frequency band . Due to the interference and delay phenomenon between the sound waves generated by the individually fixed actuators, the strong sound pressure at a specific frequency causes this dumping phenomenon, which is considered to be a decrease in the overall sound quality.

On the other hand, the solid line in FIG. 9B represents the sound output characteristics in the case of using the actuator fixing device 1000 for fixing two actuators according to an embodiment of the present invention, and it can be seen that the sound pressure is at a certain frequency The dumping phenomenon of abnormal increase in the bottom is greatly eliminated. As described above, when the actuator fixing device 1000 according to an embodiment of the present invention is used, uniform sound pressure can be generated in the entire frequency band, and improved sound output characteristics can be achieved.

Fig. 10A shows an actuator fixing device having ribs according to an embodiment of the present invention.

As shown in FIG. 10A, the actuator fixing device 1000 according to an embodiment of the present invention may include a reinforcing rib 1400. The reinforcing rib 1400 may include: at least one of two first longitudinal ribs 1410, two second longitudinal ribs 1420, a transverse rib 1430, and a pair of corner ribs 1440.

10B and 10C are graphs showing the effect over time in the case of using a rib of the actuator fixing device according to an embodiment of the present invention.

FIG. 10B shows the output of sound in the case of using an actuator fixing device that does not have a reinforcing rib but only includes a first support portion and a second support portion for simply fixing two actuators according to an embodiment of the present invention characteristic. The broken line in FIG. 10B represents the initial sound output characteristics. The solid line of FIG. 10B represents the sound output characteristics during 240 hours of work or more.

As shown in FIG. 10B, when the reinforcing rib according to an embodiment of the present invention is not used, it can be seen that the sound output characteristics change with the work time. This may be because the actuator fixing device may be deformed by the vibration of the actuator after a long time.

On the other hand, FIG. 10C shows a case where an actuator fixing device including a reinforcing rib according to an embodiment of the present invention is used. Even after 240 hours or more of the working time (solid line in FIG. 10C), the initial sound output characteristic remains almost unchanged compared with the initial sound output characteristic (solid line in FIG. 10B).

As described above, in the actuator fixing device 1000 according to an embodiment of the present invention, a reinforcing rib including a plurality of ribs extending in the longitudinal, lateral, and diagonal directions may be formed. Therefore, even if the two actuators vibrate strongly for a long time, the rigidity of the actuators can be maintained and the change in the relative positions between the two actuators and the display panel can be reduced. As a result, the sound characteristics caused by long-time work can be reduced. Sexual changes.

11 is a graph showing the sound output characteristics of the distance (d) between two actuators in the actuator fixing device according to an embodiment of the present invention.

As shown in the example of FIG. 5, and as described above, when the size (diameter) of the first actuator 200 and the second actuator 200' is D, they are used as the difference between the first support portion 1120 and the second support portion 1220. The distance (d) of the minimum distance between the two should be greater than the minimum distance for forming the reinforcing rib, for example, about 7 millimeters (mm), and less than the size D of the actuator. Figure 11 is used to explain the reason for this effect.

As shown by the dashed line in FIG. 11, in the experimental example, when the distance (d), which is the minimum distance between the first support portion 1120 and the second support portion 1220, is about 7 millimeters (mm), it is possible to obtain Improved sound output characteristics with uniform sound pressure, and the sound output characteristics change as the distance (d) increases. However, when the spaced distance (d) is about 0.85×D (for example, about 23.6 millimeters (mm)), this size is slightly smaller than the size D (about 28 millimeters (mm)) of the actuator used in the experimental example, The sound quality characteristics have not changed much, as shown by the solid line.

On the other hand, when the distance (d), which is the minimum distance between the first and second support parts 1120, 1220, becomes larger than the size D of the actuator (for example, approximately 28 millimeters (mm)) and becomes approximately 30 In millimeters (mm) (for example, approximately 1.1×D), as shown by the alternate long and short dashed lines, it can be seen that the dumping phenomenon that the sound pressure increases at a specific frequency occurs. Therefore, the distance (d) between the first support portion 1120 and the second support portion 1220 of the actuator fixing device 1000 according to the embodiment should be smaller than the size D of the actuator, so as to maintain improved sound output characteristics.

As described above, when an embodiment of the present invention is configured as a display device including a panel vibration type sounding device, an actuator fixing device having a fixing structure is provided, including adjacently inserted and fixed in the supporting structure of the sounding actuator Two sounding actuators in a supporting hole are formed, thereby reducing the thickness of the display device while generating improved sound with high sound pressure.

In addition, an embodiment of the present invention provides an actuator fixing device for supporting two sounding actuators that are adjacent to each other, and a reinforcing rib. The reinforcing rib has a plurality of actuator support parts. Ribs, so that the strength of the actuator support structure can be maintained even in long-term operations hold.

In addition, in the actuator fixing device for supporting two sounding actuators adjacent to each other, the distance (d), which is the minimum distance between the two actuator support portions, is limited to Within a certain range of the size, it is possible to increase the sound pressure while maintaining the sound characteristics in the entire frequency band.

According to one or more exemplary embodiments of the present invention, a display device includes: a display panel for displaying images, a bottom of a cover covering the display panel, and a plurality of sounding actuators supported by the bottom of the cover, the sounding actuators The display panel is vibrated to generate sound, and at least two sound-emitting actuators are adjacent to each other.

According to one or more exemplary embodiments of the present invention, the display device may further include an actuator fixing device that supports at least two sounding actuators adjacent to each other.

According to one or more exemplary embodiments of the present invention, the actuator fixing device may further fix the audible actuator to the bottom of the cover.

According to one or more exemplary embodiments of the present invention, the actuator fixing device may include a first support portion supporting a first actuator, a second support portion supporting a second actuator, and adjacent A reinforcing rib of the first support part and the second support part.

According to one or more exemplary embodiments of the present invention, the reinforcing rib may include a first longitudinal rib extending in the longitudinal direction on the outer peripheries of the first supporting portion and the second supporting portion, and connecting the first supporting portion and the second supporting portion in the longitudinal direction. A second longitudinal rib of the second support part, and a transverse rib extending perpendicular to the second longitudinal rib.

According to one or more exemplary embodiments of the present invention, the reinforcing rib may include one or more diagonal ribs extending diagonally with respect to the side of the display panel.

According to one or more exemplary embodiments of the present invention, each of the first support part and the second support part may support a part of the rear surface and the side surface of the first actuator and the second actuator, and the first The central portion of the rear surface of the actuator and the second actuator may be exposed to the outside of the actuator fixing device.

According to one or more exemplary embodiments of the present invention, the first support part and the second support The distance between the struts may be smaller than the size of the first actuator or the size of the second actuator.

According to one or more exemplary embodiments of the present invention, the distance between the first actuator and the second actuator may be smaller than the size of the first actuator or the size of the second actuator.

According to one or more exemplary embodiments of the present invention, the display device may further include a self-locking nut fixed to the bottom of the cover, and the actuator fixing device may further include a plurality of mounting holes for fixing the actuator It is fixed to the bottom of the cover, and the actuator fixing device can be fixed to the self-locking nut through a fixing bolt in the mounting hole.

According to one or more exemplary embodiments of the present invention, the sounding actuator may include a base plate, a magnet on the base plate, a center pole at the center of the base plate, a spool surrounding the center pole, and a coil wound on the spool .

According to one or more exemplary embodiments of the present invention, an apparatus includes: a display panel that displays images, a plurality of sound-generating actuators that vibrate the display panel to generate sound, cover the bottom of a cover of the display panel, and Fix at least two sounding actuators to the actuator fixing device at the bottom of the cover.

According to one or more exemplary embodiments of the present invention, at least two of the sound-emitting actuators are at least partially located between the display panel and the actuator fixing device.

According to one or more exemplary embodiments of the present invention, the actuator fixing device may include: a first support portion supporting the first actuator, a second support portion supporting a second actuator, and adjacent A reinforcing rib of the first support part and the second support part.

According to one or more exemplary embodiments of the present invention, the reinforcing rib may include: a first longitudinal rib extending in the longitudinal direction on the outer peripheries of the first supporting portion and the second supporting portion, and connecting the first supporting portion in the longitudinal direction. Part and a second longitudinal rib of the second support part, and a transverse rib extending perpendicular to the second longitudinal rib.

According to one or more exemplary embodiments of the present invention, the actuator fixing device may include a reinforcing rib including one or more diagonal ribs extending diagonally with respect to one side of the display panel.

According to one or more exemplary embodiments of the present invention, each of the first support part and the second support part may support a part of the rear surface and the side surface of the first actuator and the second actuator, and the first A central part of the rear surface of the actuator and the second actuator may be exposed to the outside of the actuator fixing device.

According to one or more exemplary embodiments of the present invention, the distance between the first support portion and the second support portion may be smaller than the size of the first actuator or the size of the second actuator.

According to one or more exemplary embodiments of the present invention, the actuator fixing device may further include a plurality of mounting holes for fixing the actuator fixing device to the bottom of the cover.

According to one or more exemplary embodiments of the present invention, the distance between the first actuator and the second actuator may be smaller than the size of the first actuator or the size of the second actuator.

According to one or more exemplary embodiments of the present invention, an apparatus includes: a display panel that displays an image, a plurality of sound-emitting actuators that vibrate the display panel to generate sound, and keep at least two sound-emitting actuators between A stiffening rib for the distance.

According to one or more exemplary embodiments of the present invention, the reinforcing rib may include a first longitudinal rib extending in the longitudinal direction, a second longitudinal rib extending in the longitudinal direction, and perpendicular to the second longitudinal direction. A transverse rib of the rib.

According to one or more exemplary embodiments of the present invention, the reinforcing rib may include one or more diagonal ribs extending diagonally with respect to one side of the display panel.

According to one or more exemplary embodiments of the present invention, an apparatus includes: a display panel for displaying images, and a plurality of sounding actuators that vibrate the display panel to generate sounds, the sounding actuators include at least one first sounding The actuator and a second sounding actuator, and the distance between the first sounding actuator and the second sounding actuator is smaller than the diameter of the first sounding actuator or the diameter of the second sounding actuator.

According to one or more exemplary embodiments of the present invention, the distance between the first sound emitting actuator and the second sound emitting actuator may be less than 28 millimeters (mm).

According to one or more exemplary embodiments of the present invention, the first vocal actuator and the second The two sounding actuators can receive the same control signal to vibrate the display panel.

According to one or more exemplary embodiments of the present invention, the device may further include a reinforcing rib that maintains the distance between the first sound generating actuator and the second sound generating actuator.

According to one or more exemplary embodiments of the present invention, the reinforcing rib may include a first longitudinal rib extending in the longitudinal direction, a second longitudinal rib extending in the longitudinal direction, and a second longitudinal rib perpendicular to the second longitudinal rib. A transverse rib of the part.

According to one or more exemplary embodiments of the present invention, the reinforcing rib may include one or more diagonal ribs extending diagonally with respect to the side of the display panel.

It is obvious to those skilled in the art that various modifications and changes can be made to the present invention without departing from the technical idea or scope of the present invention. Therefore, the embodiments of the present invention are intended to cover the modifications and changes of the present invention as long as they are within the scope of the appended patent application and its equivalents.

100: display panel

200: first actuator

200': second actuator

300: cover bottom

310: Support hole

320: fixing bolt

330: Self-locking nut

400: baffle part

500: Intermediate shell

600(A/G): Air gap space

1000: Actuator fixture

Claims (27)

A panel vibration type display device includes: a display panel for displaying an image; a bottom of a cover covering the display panel; a plurality of sounding actuators, the sounding actuators vibrate the display panel to generate sound, At least two sounding actuators are adjacent to each other; and an actuator fixing device for supporting the at least two sounding actuators adjacent to each other, wherein the actuator fixing device also actuates the at least two sounding actuators The device is fixed to the bottom of the cover. The panel vibration type display device according to claim 1, wherein the actuator fixing device includes: a first support portion supporting a first actuator; a second support portion supporting a second actuator; And a reinforcing rib adjacent to the first supporting portion and the second supporting portion. The panel vibration type display device according to claim 2, wherein the reinforcing rib includes: a first longitudinal rib extending in a longitudinal direction on the outer peripheries of the first support portion and the second support portion; and a second A longitudinal rib connects the first support portion and the second support portion in the longitudinal direction; and a transverse rib extends perpendicular to the second longitudinal rib. The panel vibration type display device according to claim 2, wherein the reinforcing rib includes one or more diagonal ribs extending diagonally with respect to one side of the display panel. The panel vibration type display device according to claim 3, wherein: each of the first support portion and the second support portion supports a part and side of the rear surface of the first actuator and the second actuator Surface; and the central portion of the rear surface of the first actuator and the second actuator is exposed to the outside of the actuator fixing device. The panel vibration type display device according to claim 3, wherein the distance between the first support portion and the second support portion is smaller than the size of the first actuator or the size of the second actuator. The panel vibration type display device according to claim 1, wherein the distance between the first actuator and the second actuator is smaller than the size of the first actuator or the size of the second actuator. The panel vibrating display device according to claim 3, further comprising: a self-locking nut fixed to the bottom of the cover, wherein the actuator fixing device further includes a plurality of mounting holes, and the mounting holes are used for the The actuator fixing device is fixed to the bottom of the cover, and wherein the actuator fixing device is fixed to the self-locking nut through a fixing bolt in the mounting holes. The panel vibration type display device according to claim 1, wherein the sound actuator includes: a bottom plate; a magnet located on the bottom plate; a center pole located at the center of the bottom plate; a spool around the center pole; And a coil, wound on the spool. A panel vibration type display device, including: A display panel for displaying an image; a plurality of sound actuators to vibrate the display panel to generate sound; a bottom of a cover to cover the display panel; and an actuator fixing device for at least two sound actuators The actuator is fixed to the bottom of the cover. The panel vibration type display device according to claim 10, wherein the at least two sound-emitting actuators are at least partially located between the display panel and the actuator fixing device. The panel vibrating display device according to claim 10, wherein the actuator fixing device includes: a first supporting part supporting the first actuator; a second supporting part supporting the second actuator; And a reinforcing rib adjacent to the first supporting portion and the second supporting portion. The panel vibration type display device according to claim 12, wherein the reinforcing rib includes: a first longitudinal rib extending in a longitudinal direction on outer peripheries of the first supporting portion and the second supporting portion; and a second A longitudinal rib connects the first support portion and the second support portion in the longitudinal direction; and a transverse rib extends perpendicular to the second longitudinal rib. The panel vibration type display device according to claim 10, wherein the actuator fixing device includes a reinforcing rib including one or more diagonal ribs extending diagonally with respect to one side of the display panel Department. The panel vibration type display device according to claim 12, wherein: Each of the first support portion and the second support portion supports a part of the rear surface and the side surface of the first actuator and the second actuator; and the first actuator and the second actuator The central part of the rear surface of the actuator is exposed to the outside of the actuator fixing device. The panel vibration type display device according to claim 12, wherein a distance between the first support portion and the second support portion is smaller than the size of the first actuator or the size of the second actuator. The panel vibration type display device according to claim 11, wherein the actuator fixing device further includes a plurality of mounting holes, and the mounting holes are used for fixing the actuator fixing device to the bottom of the cover. The panel vibration type display device according to claim 11, wherein a distance between the first actuator and the second actuator is smaller than the size of the first actuator or the size of the second actuator . A panel vibration type display device includes: a display panel for displaying an image; a bottom of a cover to cover the display panel; a plurality of sound actuators to vibrate the display panel to generate sound; a reinforcing rib for holding The distance between at least two sounding actuators; and an actuator fixing device that fixes the at least two sounding actuators to the bottom of the cover. The panel vibration type display device according to claim 19, wherein the reinforcing rib includes: a first longitudinal rib extending in a longitudinal direction; a second longitudinal rib located in the longitudinal direction; and a transverse rib The part extends perpendicular to the second longitudinal rib. The panel vibration type display device according to claim 19, wherein the reinforcing rib includes one or more diagonal ribs extending diagonally with respect to one side of the display panel. A panel vibration type display device includes: a display panel for displaying an image; a bottom of a cover covering the display panel; a plurality of sound actuators that vibrate the display panel to generate sound, the sound actuators It includes at least a first sounding actuator and a second sounding actuator, wherein a distance between the first sounding actuator and the second sounding actuator is smaller than the diameter of the first sounding actuator or The diameter of the second sounding actuator; and an actuator fixing device that fixes at least two sounding actuators to the bottom of the cover. The panel vibration type display device according to claim 22, wherein the distance between the first audible actuator and the second audible actuator is less than 28 mm. The panel vibration type display device according to claim 22, wherein the first sounding actuator and the second sounding actuator receive a same control signal for vibrating the display panel. The panel vibration type display device according to claim 22, further comprising a reinforcing rib for maintaining the distance between the first sounding actuator and the second sounding actuator. The panel vibration type display device according to claim 25, wherein the reinforcing rib includes: a first longitudinal rib extending in a longitudinal direction; a second longitudinal rib located in the longitudinal direction; and a transverse rib The part extends perpendicular to the second longitudinal rib. The panel vibration type display device according to claim 25, wherein the reinforcing rib includes one or more diagonal ribs extending diagonally with respect to one side of the display panel.

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